/// <summary>Deep copy constructor.</summary>
private Bucket(Bucket bucket)
{
LowerBound = bucket.LowerBound;
UpperBound = bucket.UpperBound;
Depth = bucket.Depth;
}
/// <summary>Adds a <c>Bucket</c> to the <c>Histogram</c>.</summary>
public void Add(Bucket bucket)
{
_buckets.Add(bucket);
_areBucketsSorted = false;
}